Dual-driver speaker



FIG. 1 is a front, top and right side perspective view of a dual-driver speaker, showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top cut-away view thereof;

FIG. 5 is a top elevational view thereof; and,

FIG. 6 is a front elevational view thereof. 

The ornamental design for a dual-driver speaker, as shown and described. 